KR970014034A - Ring signal generator for telephone - Google Patents
Ring signal generator for telephone Download PDFInfo
- Publication number
- KR970014034A KR970014034A KR1019950026984A KR19950026984A KR970014034A KR 970014034 A KR970014034 A KR 970014034A KR 1019950026984 A KR1019950026984 A KR 1019950026984A KR 19950026984 A KR19950026984 A KR 19950026984A KR 970014034 A KR970014034 A KR 970014034A
- Authority
- KR
- South Korea
- Prior art keywords
- ring
- signal
- telephone
- ring signal
- outputting
- Prior art date
Links
Landscapes
- Devices For Supply Of Signal Current (AREA)
Abstract
본 발명은 별도의 링신호 발생장치를 사용하지 않고 전화기에서 사용되는 DTMF(Dual tone multi-frequency)발생회로를 이용하여 소정의 링신호를 출력할 수 있도록 된 전화기용 링신호 발생장치에 관한 것으로, 키패드에 설치된 키입력에 대응하여 소정의 주파수신호를 생성하는 DTMF발생수단을 구비한 전화기에 있어서, 국선으로부터 링입력을 감지하기 위한 링신호 감지수단과, 상기 링신호감지수단에 의해 링입력이 감지되면서 상기 DTMF발생수단으로 단속적인 소정 주파수의 구동신호를 출력하는 제어수단 및, 상기 링신호 감지수단에 의해 링입력이 감지되 상기 DTMF발생수단으로부터의 출력신호를 스피커를 통해 출력하는 신호출력수단을 포함하여 구성된 것을 특징으로 한다.The present invention relates to a ring signal generator for a telephone, which is capable of outputting a predetermined ring signal using a dual tone multi-frequency (DTMF) generation circuit used in a telephone without using a separate ring signal generator. A telephone having a DTMF generating means for generating a predetermined frequency signal in response to a key input provided at a keypad, comprising: a ring signal detecting means for detecting a ring input from a trunk line, and a ring input is detected by the ring signal detecting means; And a control means for outputting a drive signal of a predetermined frequency intermittently to the DTMF generating means, and a signal output means for detecting a ring input by the ring signal detecting means and outputting an output signal from the DTMF generating means through a speaker. Characterized in that configured to include.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제 2 도는 본 발명의 1 실시예에 따른 전화기용 링신호 발생장치를 나타낸 블록구성도,2 is a block diagram showing a ring signal generator for a telephone according to an embodiment of the present invention;
제 3 도는 제 2 도에 나타낸 장치의 동작을 설명하기 위한 동작플로우 챠트,3 is an operation flow chart for explaining the operation of the apparatus shown in FIG.
제 4 도는 제 2 도에 나타낸 장치의 동작타이밍도.4 is an operation timing diagram of the apparatus shown in FIG.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950026984A KR970014034A (en) | 1995-08-28 | 1995-08-28 | Ring signal generator for telephone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019950026984A KR970014034A (en) | 1995-08-28 | 1995-08-28 | Ring signal generator for telephone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR970014034A true KR970014034A (en) | 1997-03-29 |
Family
ID=66596174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019950026984A KR970014034A (en) | 1995-08-28 | 1995-08-28 | Ring signal generator for telephone |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR970014034A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100437759B1 (en) * | 2000-02-24 | 2004-06-26 | 엘지전자 주식회사 | Method for generating Ringer of Mobile Station with Dual Tone Multi Frequency |
| KR20210026925A (en) | 2019-09-02 | 2021-03-10 | 서성원 | Desiccant Air Dryer |
-
1995
- 1995-08-28 KR KR1019950026984A patent/KR970014034A/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100437759B1 (en) * | 2000-02-24 | 2004-06-26 | 엘지전자 주식회사 | Method for generating Ringer of Mobile Station with Dual Tone Multi Frequency |
| KR20210026925A (en) | 2019-09-02 | 2021-03-10 | 서성원 | Desiccant Air Dryer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR970014034A (en) | Ring signal generator for telephone | |
| KR960020292A (en) | On-Board Ring Generator | |
| KR910015131A (en) | A cordless phone device | |
| KR950007355A (en) | Ring signal variable of telephone | |
| KR950022580A (en) | Selective call circuit of answering machine | |
| KR920022729A (en) | How to choose a ringtone for your phone | |
| KR890006024A (en) | Button phone | |
| KR960027993A (en) | Automatic ring tone control of door phone | |
| KR970056593A (en) | Keyer Ringer Generator | |
| KR950016145A (en) | Key tone generation control method of key phone | |
| KR880001141A (en) | Fax machine | |
| KR910005617A (en) | Answering device for telephone in absence of receiver | |
| KR970024785A (en) | Ring signal detection control method | |
| KR920014006A (en) | Pulse / tone automatic switching circuit of telephone | |
| KR920015806A (en) | Voice caller | |
| KR970031673A (en) | APPARATUS AND METHOD FOR CONTROLLING CALLING VOLUME OF TELEPHONE | |
| KR880008586A (en) | Digital voice answering phones | |
| KR940027583A (en) | Surveillance camera | |
| KR970019296A (en) | Handset prevention device of telephone | |
| KR960012872A (en) | Telephone with Peripheral Sound Control | |
| KR950002320A (en) | Common Phone Access Device for Key Phone System | |
| KR970009101A (en) | Telephone time setting circuit | |
| KR950007359A (en) | Dial control of the telephone | |
| KR940017621A (en) | Audible sound generator in keyset matching device | |
| KR970055761A (en) | Wireless Calling Device Using Telephone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E601 | Decision to refuse application |